Mr. Pat Kirwan:

It is not a new construction methodology. A number of high-quality buildings in London are currently being built at scale and with height with CLT. From an engineering point of view it could be argued that the nature of CLT itself requires attention and careful consideration of the various interfaces. From a fire point of view, all of the junctions and interfaces would be carefully considered in terms of fire barriers, connections and all those points. We can look to particular manufacturers in Scandinavia who have reams of test data relating to fire testing, particular CLTs, understanding charring and what the rates are, and then implementing that. If we take a fire engineering approach as opposed to following particular guidance in Part B, a fire engineering approach understands that if we go this way potentially there are sprinklers, or it might be a hybrid system where there might be a concrete escape core staircase, and then have CLT around that. It is certainly open for review in my instance. Perhaps other aspects of the industry might disagree with that in one sense. However, at the moment I am not aware of any particular large-scale residential development that would have even applied for a fire safety system.